JPS6225330B2 - - Google Patents

Description

[Detailed description of the invention] A. Field of industrial application Tea leaves that have been dried in a tea manufacturing machine such as a steamer, a coarse softener, a soft twister, and a medium softener are gradually heated while being gently compressed or stirred. This article relates to a closed tea softening machine that shapes the tea while drying it.

B. Prior Art Conventionally, this type of tea processing and softening machine has been operated under open atmospheric pressure.

C. Problems to be Solved by the Invention In the above-mentioned conventional process performed under open atmospheric pressure, the surface is heated by gentle pressure or stirring, dried by natural evaporation, and shaped. Insufficient drying causes stuffiness, which causes quality deterioration due to odor and discoloration.Furthermore, there are disadvantages such as heat loss due to heat dissipation due to opening and pollution due to noise.

D. Measures to solve the problems In order to eliminate the problems of the conventional method, we sealed the softening machine to form a softening chamber, and introduced circulating heating using a duct equipped with an exhaust fan, blower, heating device, and outside air suction valve mechanism. By installing a circuit, the tea leaves are heated while maintaining a reduced pressure state, and the water contained inside is released and dried while being shaped to prevent the tea leaves from becoming stuffy. Furthermore, it prevents heat radiation and reduces heat loss, producing high-quality tea. It was designed to be obtained.

E. Function: After the tea leaves have undergone the previous process, open the door of the sealed tea room and put in a certain amount of tea leaves.The door is closed to seal the inside of the tea room, and the air outlet, circulation blower, and heating are used. Start the softening process by starting the device and the softening mechanism. By this activation, the air pressure in the sealed pulping chamber is reduced to atmospheric pressure by the exhaust fan, and the circulating air blower sucks the air under reduced pressure remaining in the pulping chamber and distributes it to the duct. The hot air is then blown into the tea room, where it comes into contact with the tea leaves that are being pressed and twisted by a rotating softening plate, evaporating the moisture in the tea leaves and sucking out the humidity, and then being sucked into the circulation blower again. Heat it up and blow it into the semen chamber and repeat this process.

The hot air repeatedly circulates while heating the tea leaves and absorbing evaporated water. When the humidity gradually increases, the humidity is detected by a humidity controller, and the open air intake valve mechanism automatically controls the opening degree using a motor etc. The air is opened and sealed, and low-humidity outside air is sucked into the depressurized Seiju chamber, and the hot air with high humidity inside the Seiju chamber is discharged outside by the exhaust fan. The circulating hot air flow performs drying while maintaining the humidity at the humidity regulator setting.

In general, the airflow characteristics of an exhaust fan include resistance (static pressure loss) on the suction side, as shown by the curve shown in FIG. When the value becomes abnormal, the amount of air to be exhausted becomes zero, and conversely, the amount of air to be exhausted increases as the suction resistance decreases, and the amount of exhaust air is at its maximum when the suction resistance is zero.

Therefore, when the outside air suction valve mechanism is fully closed by continuous operation of the exhaust fan, when the pressure inside the softening chamber reaches a certain value lower than atmospheric pressure, the resistance on the suction side reaches its maximum and the exhaust The fan will not exhaust any air at all and will run idly, and there will be no air going in and out from the fan, and the inside of the cleaning chamber will be in a sealed state, cut off from the outside.

F. Example 1 is a tea manufacturing machine, and the frame 2 of this machine 1 is
A flexible torso 5 consisting of a flexible twisting machine 3 provided with unevenness and transfer troughs 4 and 4' provided on the left and right is suspended, and a wall 6 surrounded by the upper part is provided, and the wall 6 is used to seal the structure. A refined milk chamber 7 is configured. Inside the essence chamber 7, there is a rotating main shaft 8 at the top of the center part, and rotating shafts 9 on the left and right sides.
9' is provided, and furthermore, a stationary support shaft 10 is horizontally suspended at an upper position.

A swinging frame 11 is provided on the rotating main shaft 8, and the swinging of the swinging frame 11 causes the tea leaves on the flexible twisting machine 3 to be agitated at the tip.

The stationary support shaft 10 suspends the suspension rod 12 and supports one end of a weight plate 14 on which a weight 13 is mounted. A soft pressure plate 15 is provided at the bottom of the suspension rod 12,
Further, the weight 13 is moved to the weight plate 14 by the moving lever 16.
The soft pressure of the soft pressure plate 15 can be freely adjusted by moving the top of the soft pressure plate 15.

The pulp chamber 7 is equipped with a circulation blower 1 on the upper wall 6a.
7 and a duct 19 equipped with a heating device 18 such as a heater, an outside air intake valve mechanism 20 is provided on the inlet side of the duct 19, and a side wall 6b.
An input port 21 is provided with an opening/closing door 24, and an exhaust port 23 with an exhaust fan 22 is provided on the opposite side wall 6b. Reference numeral 25 denotes a temperature regulator, which is provided on the discharge side of the duct 19, and 26, a humidity regulator, which is connected to the drive section of the outside air intake valve mechanism 20.

A heating facility may also be used in the lower part of the soft body 5.

G. Effects of the Invention As described above, the present invention adjusts the heating device 18 using the temperature regulator 25 provided in the circulation duct 19, so that even if the temperature of the closed machining chamber 7 changes depending on the intake air amount of outside air, Hot air at a set temperature is always blown out from the discharge port, and in the event of an abnormal rise in tea leaf temperature, the opening degree of the valve mechanism 20 is increased to increase the ventilation air volume in the room, or the heating device is adjusted. By lowering the temperature of the hot air blown out, the tea leaves are dried and shaped while maintaining a constant temperature.
The drying machine uses hot air to dry the tea leaves, instead of relying on natural evaporation from the surface of the tea leaves like in conventional soft softeners, so the drying time can be shortened by freely controlling the drying speed according to the condition of the tea leaves. On the other hand, it significantly accelerates the drying of only the surface of the tea leaves, hardens the surface of the tea leaves, and prevents the internal moisture of the tea leaves from evaporating from the surface, causing a phenomenon called "over-drying", which causes the temperature of the tea leaves to rise abnormally, causing the formation of powder. Discoloration does not occur, or conversely, evaporation cannot follow the leakage of internal moisture from the tea leaves, resulting in deterioration of quality such as stuffiness, as well as deterioration of drying efficiency and unnecessary time consumption.

In other words, the water in the tea leaves is evaporated by circulating hot air while keeping the airtight chamber of the sealed tea-making machine in a reduced pressure state, and by continuously or intermittently drawing in outside air, the hot air with increased humidity is passed through an exhaust fan. Furthermore, since the inside of the tea leaves is under reduced pressure, the moisture in the core of the tea leaves can easily move to the surface and evaporate, and the evaporation of moisture can be carried out efficiently and in a short time by freely controlling it. Moreover, extremely high quality tea can be obtained.

[Brief explanation of the drawing]

The drawings show an embodiment of the hermetic tea softening machine according to the present invention, and FIG. 1 is a longitudinal sectional side view, and FIG. 2 is a performance curve diagram of the exhaust fan. 1...Tea making machine, 2...Frame, 3...Twisting machine, 4, 4'...Transfer gutter, 5...Tender body, 6...
Wall body, 7... Semen chamber, 8... Rotating main shaft, 9, 9'
... Rotating shaft, 10 ... Stationary support shaft, 11 ... Swing frame, 12 ... Hanging rod, 13 ... Weight, 14 ... Weight plate, 15 ... Soft pressure plate, 16 ... Moving lever, 1
7... Circulating blower, 18... Heating device, 19...
Duct, 20... Outside air intake valve mechanism, 21... Inlet, 22... Exhaust fan, 23... Exhaust port, 24...
Opening/closing door, 25...temperature regulator, 26...humidity regulator.

Claims (1)

[Claims] 1 A flexible body consisting of a flexible twisting machine and a transfer gutter is suspended on a frame, and a rotating main shaft with a swinging frame attached to the upper part, a rotating shaft on the left and right sides, and a weight plate with a weight mounted on the upper part for movable adjustment. A stationary support shaft supporting one end side is installed horizontally, and the upper part of a suspension rod that suspends the soft pressure plate is also provided on the weight plate to support the spindle, so that the tea leaves placed on the soft pressure plate are gently pressed. In the soft-softening machine, a wall is provided on the frame and sealed to form a soft-softening chamber, and the side wall of this wall has an air exhaust port equipped with an exhaust fan and an input port equipped with an opening/closing door. Furthermore, an inlet and an outlet are provided on the upper wall of the wall body, and the inlet and outlet are connected to enable circulation by a duct equipped with a circulation blower and a heating device, and the inlet side of the duct is connected to outside air. A closed tea softener comprising a temperature regulator connected to a heating device on the suction valve mechanism and the discharge side, and a humidity regulator connected to the outside air suction valve mechanism on the wall.